Sworn to Secrecy: Secrets of War

Season 6, Episode 2

Episode Title: Japan: The Invasion That Never Was

Overview:

The secret US plan for the invasion of Japan was shrouded in secrecy. It was anticipated to be the most horrific battle of the war with hundreds of thousands of casualties. New revelations detail manipulated casualty figures and secret plans to stockpile gas weapons as the US prepared for "hell on earth."